The muscular wall of the artery, surrounded by a rich adventitia creates a sunny centre – but we know is it really a hole. The floppy vein and the lymphatic drainage system complete the treasure cove. Only the nerve seems not to be made of gold.

The muscular wall of the artery, surrounded by a rich adventitia creates a sunny centre – but we know is it really a hole. The floppy vein and the lymphatic drainage system complete the treasure cove. Only the nerve seems not to be made of gold.